Keyless combination-padlock.



wihwoozo No. 888,910. PATENTED MAY 26, 1908.

B. KREUZBERGER. KEYLESS COMBINATION PADLOGK.

APPLICATION FILED NOV. 26, 1906.,

n1: uukms PETERS co., wnsumarogv, D4 5.

PATENT oFFroE.

BARTLET KREUZBERGER, OF MERIDEN, CONNECTICUT.

KEYLESS COMBINATION-PADLOCK.

Specification of Letters Patent.

Patented. May 26, 1908.

Application filed November 26, 1906. Serial No. 345,257.

To all whom it may concern:

Be it known that I, BARTLET KREUZBER- GER, a citizen of'the UnitedStates, residing at Meriden, in the county of New Haven and State ofConnecticut, have invented certain new and useful Improvements inKeyless Combination-Padlocks; and I do declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention is an improved combination padlock, and it consists in theconstruction, combination and arrangement of devices hereinafterdescribed and claimed;

In the accompanying drawings,Figure 1 is a side elevation of a padlockembodying my invention; Fig. 2 is a sectional view of the same, taken onthe plane which discloses the shackle; Fig. 3 is partly a section andpartly a top plan view of the same; and Fig. 4 is a transverse sectionalview, taken on the plane indicated by the line aa of Fig. 3.

The body of my improved padlock comprises the central portion 1, thebase portion 2, and the removable top 3. The base portion is preferablyformed integrally with the central portion and projects beyond the endsthereof, as at 4. Tubes 5, which form the bearings for the disks 6, risefrom the centers of the projecting base portions 4, and are provided ontheir opposing sides with slots 7, which extend lengthwise thereof. Thesaid tubes also serve to receive parallel arms 8 of the shackle 9, andthe slots in the said tubes serve to clear the wards 10 of the saidarms, so that the said wards project inwardly from said tubes. At theupper end of the central portion 1 of the body of the lock, at the sidesthereof, are upwardlyprojecting dove-tailed flanges 11. The same fit indove-tailed notches 12 in the sides of the top 3. The said top isprovided with openings 14, which register with the tubes 5 that form theguides for the shackle-arms and the bearings for the disks. The saiddisks 6 are placed on the said tubes, between the projecting baseportions 4 and the projecting ends of the top 3, and are rotatable onthe said tubes and are each provided with peripheral numbers or otherdesignations. Each disk has a central opening 16 for one of said tubes,an annular recess 17 of sufficient diameter to clear the wards of theshackle, and a radial opening 18 to also clear the wards of the shackle,while the upper side of the annular recess 17 forms a shoulder 19 tobear on the adjacent ward of the shackle when the disk is turned so thatits opening 18 will be out of register with said ward. The top 3 may bedetachably secured to the upper end of the body by means of a screw 20or other suitable device. The openings 14 in the ends of the said topare suflicient in size to receive the upper end of the tubes 5.

It will be understood that the top and the bottom portions of the lockbody serve to retain the disks on the tubes 5, and that arms in the saidtubes and the wards engaged by the shoulders 19 of the said disks, thatsaid disks securely fasten the shackle, so that the lock cannot beopened and the shackle released without having first turned all of thedisks to cause their openings 18 to register and aline with the wards ofthe shackle, which can only be done by a person who knows thecombination of the respective series of disks. By trans osing the disks,the combination ma be c anged, as may be understood. The ody of the lockand the top 3 thereof, are provided on one side with indicating marks orgrooves 22 for alinement with the appropriate marks on the peripheriesof the combination disks. The sides of the body portion 1 of the lockare recessed or hollowed to receive the oposing edges of the two sets orseries of combination disks.

Formed in the removable top 3 is a longitudinally-extending dove-tailedchannel 23 which receives a dove-tailed protecting plate or slide 24designed to cover the head of the screw 20 and prevent its removal, thusto insure against unauthorized removal of the top 3, there being formedin the slide an opening 25 through which one of the shackles pass forlocking the slide in place. The plate is also provided with a keyholeslot at its opposite end to receive the opposite shackle arm.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and operation of the inventionwill be readily understood without requiring a more extendedexplanation.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of the invention, as defined by theappended claims.

Having thus described my invention, what when the shackle has beenplaced with its I claim as new, and desire to secure by Letters-Patent,is,

In a lock of the class described, a central body portion having at itsupper end vertical dovetailed flanges, and at its lower end a transverseportion, separate independent tubes secured to the transverse ortion andeach having in its inner side a ongitudinal slot, a shackle having armsinsertible into said tubes and provided with lateral wards .received bysaid longitudinal slots, disks rotatably mounted upon said tubesandhaving radial slots adapted to be brought into register with saidlongitudinal slots for the passage of said wards as in inserting they?shackle arms into and removing them from i said tubes, said disksresting immediately one upon the other and having flanges adapted to beengaged by said wards and having thereon suitable indicia, a removablecap plate seated on the upper end of said body portion over said disksand having dovetail recesses to receive said flanges of said bodyportion, fastening means for securing said plate in place, said capplate having apertures for the passage of said shackle arms and also adovetail channel, and a plate seated in said channel to cover the capplate securing means, said plate being apertured to receive the arms ofthe shackle.

In testimony whereof I have hereunto set my hand in presence of twosubscribing Witnesses.

BARTLET KREUZBERGER.

Witnesses:

FRED P. OWEN, MARIE LOUISE DUIs.

